They have had fun the last couple of days dropping the parachute people they made at the Science Fair over our railing. Hopefully they realize this doesn't give them a carte blanche to throw whatever they want over, a problem we have had in the past.
We also tried recreating the lemon battery at home experimenting with different food - a clementine, a potato, and an apple. They all powered the clock, but the clementine was the weakest.
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